vlang/v 0.4.3

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V 0.4.3

11 November 2023

Improvements in the language

• A new encoding.xml module with parser, validation, entity encoding, unit tests (#19708)
• Better couroutines support (IO, networking)
• Allocations in vweb apps reduced by 80%
• Implement @VCURRENTHASH to replace C.V_CURRENT_COMMIT_HASH (#19514)
• int => i64 on 64 bit, i32 on 32 bit (start of the transition)
• Fix new int type promotion rules and cleanup native gen() (#19535)

Breaking changes

• Request.cookies map has been deprecated. Replaced with Request.cookie() and Request.add_cookie().
• Stricter rules for C types (they always have to be declared now)

Checker improvements/fixes

• Turn the option/result split warning into an error
• Turn propagation warning into an error (finishes the option/result split)
• Fix fn call with option call argument in autofree mode (#19515)
• Bring back pascal case check for aliases
• C.xx = C.yy aliases
• Allow casted integeral types in match ranges (#19572)
• Warn about byte deprecation, when used as a fn parameter (#19629)
• Allow size of fixed array to be integral casts (#19663)
• Fix generic array append (#19658)
• Check error of implementing other module private interface (fix #19620) (#19688)
• Extend byte deprecation warning to array init types (#19671)
• Extend byte deprecation warnings to return types (#19668)
• Fix negative cap, len checks in array init (#19694)
• Turn warning for var and param module name duplicates into error (#19645)
• Fix closure in if guard, including with multi_return (#19765)
• Fix comptime enumdata value property access (#19768)
• Fix field ?&Type without default value (#19786)
• Avoid nil assign to option var (#19746)
• Allow for a shared variable to be whole reassigned (keeping the same mutex state) (fix #15649) (#19751)

Parser improvements

• Fix assigning static method to anon fn (#19499)
• ast: fix formatting a struct declaration with a nested struct (#19592)
• Add set_all + clear_all methods to [flag] enum bitfields (#19717)
• ast: reduce cost of frequently called functions by using constants (#19733)
• Warn on unused imports, even when they are declared via import math { sin, cos } (#19738)
• ast: add missing docstrings for the public fns in vlib/v/ast/types.v (#19752)
• Give a friendly error when misusing if over $if (#19810)
• Add multiple struct attributes error for new attribute syntax

Compiler internals

• checker, builder, pref: support -dump-defines - to help explore all the available user and system defines for a given program (#19576)
• pref,builder: add support for -macosx-version-min 10.2 and -macosx-version-min 0 (with default of 10.7) (#19626)
• pref: fix unintended file extensions in default output names, allow for v run file.c.v (#19745)
• transformer: fix using a constant, instead of a fn parameter with the same name (fix #19766) (#19773)
• maps: add maps.merge() and maps.merge_in_place() generic utility functions (#19776)
• coroutines: only attempt to add/remove roots when GC is on.
• markused: cleanup in mark_used(), use robust index names, instead of the much more brittle integer values (#19543)

Standard library

• builtin: add an unsafe { a.reset() } method, for quickly setting all bytes in an array to 0
• math.fractions: use operator overloading and deprecate old functions (#19547)
• gg: fix the alignment of the bottom border of draw_rounded_rect_empty on macos and linux
• crypto.bcrypt: fix bcrypt failure for valid pass and hash (fix #19558) (#19569)
• sokol: update sokol to the latest version
• builtin: fix sizeof(C.BOOL) (windows specific) (#19589)
• math.big: fix incorrect division with negative numbers (fix #19585) (#19587)
• os: add a convenient way to ignore certain system signals (#19632)
• os: fix os.ls(folder) on windows, when a protected folder can not be opened (#19647)
• os: add a convenient way to ignore certain system signals (#19639)
• crypto.sha: fix calculating the same hash values when .sum() is called several times for sha1/256/512 (fix #19696) (#19697)
• crypto.md5: fix calculating the same hash values, when .sum() is called several times (#19703)
• os: add a new function execute_opt (#19723)
• os: add os.page_size() (#19770)
• os: implement os.fd_is_pending/1, os.Process.pipe_read/1, os.Process.is_pending/1 (#19787)
• builtin: copy min/max integer values consts from math to builtin so that the entire math module doesn't have to be imported(#19809)
• json2: add support for nested structs (#19579)

Web

• vweb: add mime type support for static .md files
• net.conv: add varinttou64 and u64tovarint functions, for the variable unsigned integer encoding, described in rfc9000 (for QUIC) (#19568)
• net.http: support passing on_running, on_stopped, on_closed callback functions to http.Server{}, as well as show_startup_message: false. (#19591)
• net: fix handling of spurious wake-up signals, lost when calling select() in mbedtls and openssl (continue on C.EINTR) (#19600)
• net: use conv.hton* consistently, instead of $if tinyc { conv.hton16(port) } $else { u16(C.htons(port)) }
• net.http: support passing an HTTP proxy server in http.fetch (#19606)
• net.http: add a retry mechanism to http.fetch(), when the socket inevitably errors (#19660)
• wasm: implement inline assembly (#19686)
• net.http: increase max_redirects to 16 (#19743)
• picoev: implement raw mode (#19771)
• flag,json,net: handle C calls in .v files (part of enabling -W impure-v as default) (#19779)
• net.http: add socks5|http(s) proxy support [Linux] (#19676)

ORM

• orm: add null handling and option fields (#19379)
• orm: make is_null/is_not_null unary ops; don't bind null in where (#19635)

Database drivers

• pg: hande C calls, move to .c.v files (#19739)

Native backend

• native: support -no-builtin (generate executables < 1KB Linux with v -no-builtin -b native examples/hello_world.v)
• native: use i32 instead of int

C backend

• Fix printing fixed array of options (#19479)
• Fix struct field of fixed array init (fix #19483) (#19487)
• Fix struct init with multi option fn type (#19491)
• Ast, native, cgen: add support for $if native {} (#19500)
• Fix maps with i32 keys
• Fix for c stmt with option or result calls (#19641)
• Fix infix op when handling comptime selector (#19691)
• Fix array contains method with interface(fix #19670) (#19675)
• Reduce expense in repetitively called functions by using consts (#19732)
• Fix closure parameter judgment when var cross assign inside anon fn(fix #19734) (#19736)
• Only generate free in wrapper for spawn and not go (#19780)
• Fix g.obf_table data missing(fix #19695) (#19778)
• Fix closure variable in smartcast (#19796)

vfmt

• Remove additional line breaks after call_expr before params struct args (#19795)
• Fix map value aligment when using keys with uft8 symbols (#19689)
• Align ternary expressions in const blocks (#19721)
• Respect range index expressions in match branches (#19684)
• Respect raw strings in $embed_file(r'/some/path') expressions (#19753)
• Fix formatting of struct field with default value and new attr syntax (#19683)
• Recognize or blocks in call args (#19690)

Tools

• all: add support for @LOCATION, for more convenient logging/tracing, without needing to combine @FILE, @LINE at runtime (#19488)
• benchmark: add new methods b.record_measure/1 and b.all_recorded_measures/0 (#19561)
• ci: update c2v workflow, translate doom on macOS (#19562)
• strings: add Bulder.write_decimal/1 method (write a decimal number, without additional allocations) (#19625)
• testing: add temporary file hash to prevent accidental collisions with test file binaries (#19710)
• ci: compile VTL and VSL in their own CI job, with VFLAGS=-no-parallel
• tools: fix windows install of an already existing module with vpm (#19761)
• tools: use VPM_NO_INCREMENT env var to skip dl count increment when testing vpm (#19756)
• tools.vpm: improve handling of urls that end with .git (#19758)
• tools: fix resolving external dependencies in vpm, add test (#19772)
• tools: cleanup and simplify vcreate, for upcoming fixes and features (#19794)
• tools: improve error messages, add color coding and debug logging (#19781)
• tools: fix v build-tools, make v test more robust (#19803)
• tools: add parse_query to vpm (#19814)
• ci: add macos arm64 binary release (#19823)
• Require the presence of a v.mod file, to install external urls via vpm (#19825)
• vcreate: fix v init with project names containing dashes (#19619)

Operating System support

Examples

• tests: workaround name conflict, causing false positives with msvc on windows, when both tests were executed at the same time (locked executable)